Abstract
II–VI semiconductors exhibit unique behaviors that can generate dual-holes (“heavy and light”), but the application in photocatalysis is still missing. Herein, an empirical utilization of light/heavy holes in a hybrid metal cluster-2D semiconductor nanoplatelets is reported. This hybrid material can boost the hole-transfer at the surface and suppress the recombination. Different roles are enacted by light-holes and heavy-holes, in which the light-holes with higher energy and mobility can facilitate the slow kinetics of water oxidation and further reduce the onset voltage, while the massive heavy-holes can increase the resulting photocurrent by about five times, achieving a photocurrent of 2 mA cm−2 at 1.23 V versus RHE under AM 1.5 G illumination in nonsacrificial neutral solution. These strategies can be the solutions for photoelectrolysis and be beneficial for sustainable development in solar conversion.
| Original language | English |
|---|---|
| Article number | 1704047 |
| Journal | Small |
| Volume | 14 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2018 Apr 5 |
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Keywords
- cadmium selenide
- light holes
- nanoplatelets
- photoelectrochemistry
- photoelectrolysis
ASJC Scopus subject areas
- Biotechnology
- Biomaterials
- Chemistry(all)
- Materials Science(all)
Cite this
Dual-Hole Excitons Activated Photoelectrolysis in Neutral Solution. / Hung, Sung Fu; Chen, Zhi Zhong; Chang, Chun Chih; Hsu, Chia Shuo; Tsai, Ming Kang; Kang, Chia Cheng; Chen, Hao Ming.
In: Small, Vol. 14, No. 14, 1704047, 05.04.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dual-Hole Excitons Activated Photoelectrolysis in Neutral Solution
AU - Hung, Sung Fu
AU - Chen, Zhi Zhong
AU - Chang, Chun Chih
AU - Hsu, Chia Shuo
AU - Tsai, Ming Kang
AU - Kang, Chia Cheng
AU - Chen, Hao Ming
PY - 2018/4/5
Y1 - 2018/4/5
N2 - II–VI semiconductors exhibit unique behaviors that can generate dual-holes (“heavy and light”), but the application in photocatalysis is still missing. Herein, an empirical utilization of light/heavy holes in a hybrid metal cluster-2D semiconductor nanoplatelets is reported. This hybrid material can boost the hole-transfer at the surface and suppress the recombination. Different roles are enacted by light-holes and heavy-holes, in which the light-holes with higher energy and mobility can facilitate the slow kinetics of water oxidation and further reduce the onset voltage, while the massive heavy-holes can increase the resulting photocurrent by about five times, achieving a photocurrent of 2 mA cm−2 at 1.23 V versus RHE under AM 1.5 G illumination in nonsacrificial neutral solution. These strategies can be the solutions for photoelectrolysis and be beneficial for sustainable development in solar conversion.
AB - II–VI semiconductors exhibit unique behaviors that can generate dual-holes (“heavy and light”), but the application in photocatalysis is still missing. Herein, an empirical utilization of light/heavy holes in a hybrid metal cluster-2D semiconductor nanoplatelets is reported. This hybrid material can boost the hole-transfer at the surface and suppress the recombination. Different roles are enacted by light-holes and heavy-holes, in which the light-holes with higher energy and mobility can facilitate the slow kinetics of water oxidation and further reduce the onset voltage, while the massive heavy-holes can increase the resulting photocurrent by about five times, achieving a photocurrent of 2 mA cm−2 at 1.23 V versus RHE under AM 1.5 G illumination in nonsacrificial neutral solution. These strategies can be the solutions for photoelectrolysis and be beneficial for sustainable development in solar conversion.
KW - cadmium selenide
KW - light holes
KW - nanoplatelets
KW - photoelectrochemistry
KW - photoelectrolysis
UR - http://www.scopus.com/inward/record.url?scp=85045131530&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85045131530&partnerID=8YFLogxK
U2 - 10.1002/smll.201704047
DO - 10.1002/smll.201704047
M3 - Article
AN - SCOPUS:85045131530
VL - 14
JO - Small
JF - Small
SN - 1613-6810
IS - 14
M1 - 1704047
ER -